What shape could be roated about y-axis as shown below to form a square pyramid ?

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')

A. use the formula for continuous compounding with the original example: $1000 invested at 2% for 1 year. record the amount to 5 decimal places. use a calculator. b. compare it to the result using the original compound interest formula with n = 365 calculated to 5 decimal places. which has a larger value? explain.

What is the area of the original rectangle? 8 cm² 20 cm² 25 cm² 40 cm²